Tread portion of an automobile tire



FIG. 1 is a perspective view of a tread portion of an automobile tire, it being understood that the tread pattern repeats uniformly throughout the circumference of the tire;

FIG. 2 is a front elevational view thereof, the top plan view and bottom plan views being identical thereto;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is an enlarged fragmentary front elevational view thereof; and,

FIG. 7 is a cross-sectional view thereof taken along the line 7—7 in FIG. 6.

The portion of the article shown in broken lines is for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a tread portion of an automobile tire, as shown and described. 